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Shake cabalfiles: give an error when this fails
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parent
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7
Shake.hs
7
Shake.hs
@ -503,7 +503,12 @@ main = do
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-- regenerate .cabal files from package.yaml's, using stack (also installs deps)
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phony "cabalfiles" $ do
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cmd Shell "stack build --dry-run --silent" :: Action ()
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-- can fail to update cabal files, with zero exit status; need
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-- to check stderr, and only for error message since all
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-- output goes there
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err <- fromStderr <$> (cmd Shell "stack build --dry-run" :: Action (Stderr String))
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when ("was generated with a newer version of hpack" `isInfixOf` err) $
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liftIO $ putStr err >> exitFailure
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when commit $ do
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let msg = ";update cabal files"
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cmd Shell gitcommit ("-m '"++msg++"' --") cabalfiles
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